US3957278A - Injection molded seal and production thereof - Google Patents

Injection molded seal and production thereof Download PDF

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Publication number
US3957278A
US3957278A US05/299,635 US29963572A US3957278A US 3957278 A US3957278 A US 3957278A US 29963572 A US29963572 A US 29963572A US 3957278 A US3957278 A US 3957278A
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US
United States
Prior art keywords
sealing lip
support
seal
lip
fiber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/299,635
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English (en)
Inventor
Jurgen Rabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INA Waelzlager Schaeffler OHG
Original Assignee
Industriewerk Schaeffler OHG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Industriewerk Schaeffler OHG filed Critical Industriewerk Schaeffler OHG
Application granted granted Critical
Publication of US3957278A publication Critical patent/US3957278A/en
Assigned to INA WALZLAGER SCHAEFFLER KG reassignment INA WALZLAGER SCHAEFFLER KG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: INDUSTRIEWERK SCHAEFFLER OHG
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
    • B29C45/1639—Removable partitions between adjacent mould cavity portions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/44—Needle bearings
    • F16C19/46—Needle bearings with one row or needles
    • F16C19/466—Needle bearings with one row or needles comprising needle rollers and an outer ring, i.e. subunit without inner ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7809—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for needle roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/328—Manufacturing methods specially adapted for elastic sealings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/922—Bonding or joining for manufacture of seal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/924—Deformation, material removal, or molding for manufacture of seal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/935—Seal made of a particular material
    • Y10S277/936—Composite
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/047—Seal ring

Definitions

  • the sealing lip support and the sealing lip are made of the same material with the same strengths and the same elasticity. This means that the sealing lip support must have the same high degree of elasticity as the sealing lip which is necessary for a good sealing effect.
  • a sealing lip support which is elastic is disadvantageous when the seal must be pressed in during assembly or when a close fit of the seal with another part is required, particularly with the race of a roller bearing.
  • the novel seal of the invention is comprised of a sealing lip support and a sealing lip of different injectable materials bonded together in the hot plastic state by injection molding.
  • the possible variations of the invention include a seal with sealing lip support made of an injectable material of greater elasticity than the sealing lip or that the sealing lip support may be made of a fiber-reinforced material and the sealing lip is made of an injectable material without fiber-reinforcement. It is also possible for the sealing lip and sealing lip support to be made of fiber-reinforced, injectable material and to make the fiber concentration much greater in the support than the lip or to make the sealing lip of an injectable material with a lower modulus of elasticity than the support.
  • the method of the invention for the preparation of the seal comprises separately injecting into an injection mold material for the sealing lip support and the sealing lip and bonding the two said materials in the hot plastic state, the two materials having a different elasticity.
  • the zone in the injection mold for the sealing lip support is separated from the zone of the sealing lip by a displaceable partition and the material for the support is first injected into the mold by a sprue hole and then another material for the sealing lip is injected by a second sprue hole and the partition is then removed from the injection mold. It is possible to inject both materials simultaneously and then to remove the partition at the end of the injection molding process or to inject one of the materials, remove the partition and then inject the second material.
  • an injectable, fiber-reinforced material is injected through a single sprue hole into an injection mold with baffle barriers in the sprue hole effecting at least a partial separation of the material flowing in the zone of the sealing lip.
  • the reduction of the fiber concentration in the sealing lip is a result of the physical-rheological relationship of injectable fiber-reinforced rubber or plastic melts of low viscosity when they pass through narrow shearing gaps formed by baffle barriers.
  • the sealing lip support may have a greater capacity to withstand stress and a greater rigidity than the sealing lip whereby the seal meets all requirements required during pressing-in of the seal and with regard to close fits with another part.
  • the sealing lip may be highly elastic and is not impaired in its sealing effect and its capacity to retain its shape.
  • the material for the sealing lip and its support may be natural rubber, synthetic rubber, thermoplastic resins, elastomers and duroplastic resins.
  • Examples of reinforcing fibers for fiber-reinforced injectable materials are glass fibers, textile fibers and metallic fibers or so-called whiskers.
  • the finished seal will not separate and shows no recognizable distinct separation in the transition area of sealing lip and its support.
  • FIG. 1 is a partial longitudinal section through a needle bearing with a seal of the invention and
  • FIG. 2 is an enlarged detail of the seal in Circle V of FIG. 1.
  • FIGS. 3a and 3b are partial cross-sectional views of the mold for the producing of the seal made of different materials.
  • a needle bearing which is used to illustrate one possible application of the seal of the invention is comprised of a plurality of needle rollers 3 accommodated in cage 2 and rolling upon outer race 1.
  • the needle bearing is sealed on one end with seal 4 consisting of a sealing lip 5 and a sealing lip support 6.
  • seal 4 consisting of a sealing lip 5 and a sealing lip support 6.
  • the reinforcing fibers are schematically illustrated in seal lip support 6 while the sealing lip 5 is free of reinforcing fibers and a decreasing concentration of the fibers can be seen in the transition area from support 6 to lip 5.
  • FIGS. 3a and 3b illustrate an injection molding apparatus for the production of a seal of the invention.
  • the apparatus is shown in the first stage wherein the material for the sealing lip support 6 is injected and in FIG. 3b, the apparatus is shown in the second stage wherein the material for the sealing lip is injected.
  • separating sleeve 7 is pushed to the right in the injection mold to separate the ara of support 6 from the area of sealing lip 5 and the fiber-reinforced material for support 7 is injected through a first sprue hole 8.
  • the second material for sealing lip 5 injected through a second sprue hole 9 and with the separating sleeve 7 displaced towards the left, the two materials in the hot plastic state are bonded firmly together.
  • the two materials may be injected simultaneously or one after the other.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Reinforced Plastic Materials (AREA)
  • Sealing Of Bearings (AREA)
US05/299,635 1971-11-17 1972-10-20 Injection molded seal and production thereof Expired - Lifetime US3957278A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DT2157015 1971-11-17
DE2157015A DE2157015C2 (de) 1971-11-17 1971-11-17 Verfahren zur Herstellung einer Dichtung aus spritzbarem Werkstoff

Publications (1)

Publication Number Publication Date
US3957278A true US3957278A (en) 1976-05-18

Family

ID=5825359

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/299,635 Expired - Lifetime US3957278A (en) 1971-11-17 1972-10-20 Injection molded seal and production thereof

Country Status (8)

Country Link
US (1) US3957278A (enrdf_load_stackoverflow)
JP (2) JPS4862854A (enrdf_load_stackoverflow)
BR (1) BR7207976D0 (enrdf_load_stackoverflow)
DE (1) DE2157015C2 (enrdf_load_stackoverflow)
ES (1) ES408636A1 (enrdf_load_stackoverflow)
FR (1) FR2161573A5 (enrdf_load_stackoverflow)
GB (1) GB1412263A (enrdf_load_stackoverflow)
IT (1) IT970379B (enrdf_load_stackoverflow)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157883A (en) * 1977-01-26 1979-06-12 Pedro Mares Process and apparatus for forming compound structure of various plastic materials in mold having apertured slide plate
US4160309A (en) * 1977-01-26 1979-07-10 Scholle Corporation Method and apparatus for making battery grids
US4269802A (en) * 1976-03-17 1981-05-26 Caterpillar Tractor Co. Process for making dual-material self-bonding lip seal
US4446085A (en) * 1982-08-30 1984-05-01 Earsley Melvin L Molding of seal rings
US4496176A (en) * 1981-12-16 1985-01-29 Karl Weinhold Device for connecting flanged pipes
US4601476A (en) * 1984-11-28 1986-07-22 Metex Corporation Squeak free seal for exhaust couplings
US4659091A (en) * 1982-09-16 1987-04-21 Goetze Ag Sealing ring for sealing an articulated connection
US4758101A (en) * 1987-05-13 1988-07-19 Xerox Corporation Bearing mounting
US4805919A (en) * 1987-07-14 1989-02-21 Wasley Products, Inc. Bearing seal
WO1989004751A1 (en) * 1987-11-19 1989-06-01 Pebra Gmbh Paul Braun Device for manufacturing plastic mouldings and use of the device
US4850602A (en) * 1987-11-30 1989-07-25 W. S. Shamban & Company Fluid seal and rod wiper assembly
WO1990007664A1 (en) * 1989-01-09 1990-07-12 J.M. Clipper Corporation Annular seal
US5419641A (en) * 1993-02-10 1995-05-30 Nsk Ltd. Radial needle bearing
US5509670A (en) * 1994-10-28 1996-04-23 The Texacone Company Packing member with reduced friction
US5618488A (en) * 1993-09-16 1997-04-08 Skf Industrial Trading & Development Company B.V. Method of manufacturing a seal for a roller bearing
US5704615A (en) * 1994-10-28 1998-01-06 The Texacone Company Packing member with reduced friction
US6189894B1 (en) * 1999-04-19 2001-02-20 The Texacone Company Urethane packing member with improved geometric configuration
EP1027964A3 (en) * 1999-02-09 2003-04-09 Black & Decker Inc. Rotary hammer
US20040208409A1 (en) * 2003-02-18 2004-10-21 Koyo Seiko Co., Ltd. Rolling bearing
US20070183702A1 (en) * 2006-02-07 2007-08-09 Schaeffler Kg Sealing element for a rotatable part with a tractrix form
US20080232733A1 (en) * 2007-03-19 2008-09-25 Jtekt Corporation Drawn cup roller bearing and method of producing drawn cup roller bearing
US20090154854A1 (en) * 2005-09-07 2009-06-18 Ntn Corporation Coreless Seal and Rolling Bearing
US20140044384A1 (en) * 2011-04-21 2014-02-13 Illinois Tool Works Inc. Direct acting endlink seal
US20180172161A1 (en) * 2016-12-20 2018-06-21 Herbert Haenchen Gmbh & Co. Kg Sealing ring of a translationally adjustable component
US12305759B2 (en) * 2020-05-03 2025-05-20 Abb Schweiz Ag Sealing assembly and robot

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DE2807022C2 (de) * 1978-02-18 1982-07-01 Fa. Carl Freudenberg, 6940 Weinheim Dichtring
US4275030A (en) * 1978-05-10 1981-06-23 Pedro Mares Injection molding articles of more than one resin component
ZA792223B (en) * 1978-05-19 1980-06-25 Dunlop Ltd Fluid seals
CH643047A5 (de) * 1978-10-18 1984-05-15 Battenfeld Maschfab Verfahren zum herstellen von fittings fuer rohrverbindungen sowie werkzeug zur ausuebung des verfahrens und nach diesem verfahren hergestelltes fitting.
FR2462261A1 (fr) * 1979-07-27 1981-02-13 Quillery Procede et dispositif de moulage par injection de pieces bimatiere
FR2513176A1 (fr) * 1981-09-18 1983-03-25 Allibert Sa Procede permettant d'enrober hermetiquement les armatures d'une piece en matiere plastique armee interieurement et pieces obtenues selon ce procede
DE3239765A1 (de) * 1982-10-27 1984-05-03 Walter Klein GmbH & Co. KG, 5600 Wuppertal Zweikomponenten-spritzgiessverfahren zur herstellung von kunststoffleisten, abdeckungen und dergleichen
JPS59214630A (ja) * 1983-05-20 1984-12-04 Mitsubishi Motors Corp 芯金入り分割成形式樹脂部品の製造方法
GB8517073D0 (en) * 1985-07-05 1985-08-14 Hepworth Iron Co Ltd Pipe pipe couplings &c
GB2179584B (en) * 1985-07-05 1990-05-23 Hepworth Iron Co Ltd Method and apparatus for the manufacture of pipe couplings
GB2192577B (en) * 1986-07-18 1990-01-10 Wavin Bv Channel conduit couplings
GB2192578B (en) * 1986-07-18 1990-02-14 Wavin Bv Pipe couplings
SE8605318L (sv) * 1986-12-11 1988-06-12 Akerlund & Rausing Ab Anordning for mojliggorande av atminstone vetsketet forbindning samt forfarande for tillverkning av sadan anordning
JPH10318268A (ja) 1997-03-18 1998-12-02 Nippon Seiko Kk 転がり軸受用シール
DE19900233A1 (de) * 1999-01-07 2000-07-13 Moeller Plast Gmbh Verfahren zur Herstellung eines hochbelastbaren Bauteils aus Kunststoff und hochbelastbares Bauteil
FR2824773B1 (fr) * 2001-05-17 2005-06-24 Renault Procede de fabrication par moulage d'une piece composite en matiere plastique et en caoutchouc
WO2003016018A1 (en) * 2001-08-17 2003-02-27 Intersurgical Limited Anatomical mask
DE102009052318A1 (de) 2009-10-30 2011-05-12 Neo-Plastic Dr. Doetsch Diespeck Gmbh Lagereinheit mit Sandwichdichtung
DE102009052316A1 (de) 2009-10-30 2011-05-12 Neo-Plastic Dr. Doetsch Diespeck Gmbh Sandwichdichtung mit verbreiteter Kopfform
WO2010086145A1 (de) 2009-01-27 2010-08-05 Neo-Plastic Dr. Doetsch Diespeck Gmbh Sandwichdichtung mit verbreiteter kopfform
DE102009007049A1 (de) 2009-01-27 2010-08-12 Neo-Plastic Dr. Doetsch Diespeck Gmbh Dichtung
DE102009052317A1 (de) 2009-10-30 2011-05-12 Neo-Plastic Dr. Doetsch Diespeck Gmbh Sandwichdichtung mit durchgreifendem Kern und Prozesssteuerung mit Überlaufeinrichtung
WO2010086144A1 (de) 2009-01-27 2010-08-05 Neo-Plastic Dr. Doetsch Diespeck Gmbh Sandwichdichtung mit durchgreifendem kern und prozesssteuerung mit überlaufeinrichtung
DE102009007048A1 (de) 2009-01-27 2010-08-12 Neo-Plastic Dr. Doetsch Diespeck Gmbh Dichtung
WO2010086143A1 (de) 2009-01-27 2010-08-05 Neo-Plastic Dr. Doetsch Diespeck Gmbh Lagereinheit mit sandwichdichtung
DE102014219701B4 (de) * 2014-09-29 2016-09-29 Aktiebolaget Skf Großrollenlager mit Dichtung
JP6077154B1 (ja) * 2016-03-04 2017-02-08 株式会社バンダイ 樹脂成型品、成形装置、成形方法及び金型

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US2470089A (en) * 1944-09-28 1949-05-17 Jack J Booth Method of molding plastic shoes
US2485323A (en) * 1943-12-21 1949-10-18 Eugene H Schwartz Method and apparatus for producing ornamental multicolored designs
US2538198A (en) * 1947-04-18 1951-01-16 Garlock Packing Co Sealing device having interbonded rigid and flexible molded portions
US3305895A (en) * 1965-02-16 1967-02-28 Ludwig Herbert Injection molding apparatus for shoe bottoms
US3493645A (en) * 1967-09-29 1970-02-03 Ford Motor Co Process for manufacturing seals
US3608004A (en) * 1968-05-16 1971-09-21 Uniroyal Inc Method of making footwear having a two-color rubber sole

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US2485323A (en) * 1943-12-21 1949-10-18 Eugene H Schwartz Method and apparatus for producing ornamental multicolored designs
US2470089A (en) * 1944-09-28 1949-05-17 Jack J Booth Method of molding plastic shoes
US2538198A (en) * 1947-04-18 1951-01-16 Garlock Packing Co Sealing device having interbonded rigid and flexible molded portions
US3305895A (en) * 1965-02-16 1967-02-28 Ludwig Herbert Injection molding apparatus for shoe bottoms
US3493645A (en) * 1967-09-29 1970-02-03 Ford Motor Co Process for manufacturing seals
US3608004A (en) * 1968-05-16 1971-09-21 Uniroyal Inc Method of making footwear having a two-color rubber sole

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4269802A (en) * 1976-03-17 1981-05-26 Caterpillar Tractor Co. Process for making dual-material self-bonding lip seal
US4157883A (en) * 1977-01-26 1979-06-12 Pedro Mares Process and apparatus for forming compound structure of various plastic materials in mold having apertured slide plate
US4160309A (en) * 1977-01-26 1979-07-10 Scholle Corporation Method and apparatus for making battery grids
US4496176A (en) * 1981-12-16 1985-01-29 Karl Weinhold Device for connecting flanged pipes
US4446085A (en) * 1982-08-30 1984-05-01 Earsley Melvin L Molding of seal rings
US4659091A (en) * 1982-09-16 1987-04-21 Goetze Ag Sealing ring for sealing an articulated connection
US4601476A (en) * 1984-11-28 1986-07-22 Metex Corporation Squeak free seal for exhaust couplings
US4758101A (en) * 1987-05-13 1988-07-19 Xerox Corporation Bearing mounting
US4805919A (en) * 1987-07-14 1989-02-21 Wasley Products, Inc. Bearing seal
WO1989004751A1 (en) * 1987-11-19 1989-06-01 Pebra Gmbh Paul Braun Device for manufacturing plastic mouldings and use of the device
US4850602A (en) * 1987-11-30 1989-07-25 W. S. Shamban & Company Fluid seal and rod wiper assembly
WO1990007664A1 (en) * 1989-01-09 1990-07-12 J.M. Clipper Corporation Annular seal
US5419641A (en) * 1993-02-10 1995-05-30 Nsk Ltd. Radial needle bearing
US5618488A (en) * 1993-09-16 1997-04-08 Skf Industrial Trading & Development Company B.V. Method of manufacturing a seal for a roller bearing
US5704615A (en) * 1994-10-28 1998-01-06 The Texacone Company Packing member with reduced friction
US5509670A (en) * 1994-10-28 1996-04-23 The Texacone Company Packing member with reduced friction
EP1027964A3 (en) * 1999-02-09 2003-04-09 Black & Decker Inc. Rotary hammer
US6189894B1 (en) * 1999-04-19 2001-02-20 The Texacone Company Urethane packing member with improved geometric configuration
US7431511B2 (en) * 2003-02-18 2008-10-07 Koyo Seiko Co., Ltd. Rolling bearing
US20040208409A1 (en) * 2003-02-18 2004-10-21 Koyo Seiko Co., Ltd. Rolling bearing
US20090154854A1 (en) * 2005-09-07 2009-06-18 Ntn Corporation Coreless Seal and Rolling Bearing
US8262291B2 (en) * 2005-09-07 2012-09-11 Ntn Corporation Coreless seal and rolling bearing
US20070183702A1 (en) * 2006-02-07 2007-08-09 Schaeffler Kg Sealing element for a rotatable part with a tractrix form
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US20180172161A1 (en) * 2016-12-20 2018-06-21 Herbert Haenchen Gmbh & Co. Kg Sealing ring of a translationally adjustable component
US10753475B2 (en) * 2016-12-20 2020-08-25 Herbert Haechen Gmbh & Co. Kg Sealing ring of a translationally adjustable component
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Also Published As

Publication number Publication date
DE2157015A1 (de) 1973-05-24
DE2157015C2 (de) 1982-04-01
FR2161573A5 (enrdf_load_stackoverflow) 1973-07-06
ES408636A1 (es) 1976-03-16
JPS4862854A (enrdf_load_stackoverflow) 1973-09-01
GB1412263A (en) 1975-10-29
IT970379B (it) 1974-04-10
BR7207976D0 (pt) 1973-09-18
JPS56156631U (enrdf_load_stackoverflow) 1981-11-21

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